ECHO YACHTs Trimaran 84 m STADT. No-Loss AC Drives. Integrated Electric Propulsion Systems

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1 ECHO YACHTs Trimaran 84 m STADT No-Loss AC Drives Integrated Electric Propulsion Systems

2 The history of STADT The STADT Group was founded by Hallvard L. Slettevoll back in In December the 30th anniversary was celebrated. At the same time the group moved in to the new and modern STADT Maritime Center in Gjerdsvika. With a location in the middle of the maritime cluster on the west coast of Norway, the aim has always been to develop power inverters for ship applications. In 1997, after several years of intensive developments, an innovative and very modern inverter series was launched. A major advantage of these inverters, was the very compact design due to direct water cooling. The first STADT delivery went to the Norwegian coastguard K/V Tromsø. This was a breakthrough, and the business improved rapidly. The main business area for the new inverters, made in powers up to 3500 kw 690 V, was for diesel-electric main propulsion of ships, as well as offshore applications on oil rigs and for industrial use. Companies like TFDS - Hurtigruten, Geo Shipping, PGS, Sanco Shipping, Aker, Statoil, Hydro, BP and Bayer AG became regular customers. In 2001 the water cooled STADT IGBT-converter business, based on PWM technology, was sold to ABB, which incorporated them into their marine product range. After STADT has been working with dev elopment of the 5. generation AC drives, the STADT NO-LOSS drives. This new no loss technology, based on sinus control, was patented in 2008, and launched to the first ship applications the same year. The new drive technology has been awarded several times for its unique characteristics, and many ships are now sailing with the No-Loss technology all over the world. STADT - Awarded Technology leader Long experience from development of motordrives has resulted in the patented STADT technology. This has huge advantages compared to traditional PWM-technology, since it is free from electric disturbances. The STADT NO-LOSS is also a very efficient power drive system with only 6 % electric system losses, including the losses in generator and electric propulsion motor The STADT Maritime Center in Gjerdsvika.

3 STADT NO-LOSS drives Patented Technology STADT AC DRIVE No Trafo No Filter No THD No - Loss No EMC Superior technology with Stealth performance The STADT NO-LOSS drive provides sinusoidal voltage and current to the electric motor and back to the main switchboard. This gives very low harmonic disturbances in main switchboard and motor. A sustainable solution, because: Reduced fuel consumption, by up to 60 % Reduced electric losses in systems, only 6 % Reduced NOx, SOx and CO2 emission Reduced maintenance and high redundancy MTBF: 7 Years, MTTR: 2 Hours Reduced noise and no EMC a Stealth solution Highly reliable, compact system, no transformers needed Estimated lifetime: >25 years The STADT NO-LOSS can be delivered up to 80 MW in voltages up to 15 kv. Combined with CP propellers, it assures the highest manoeuverability for the ship. THE DIFFERENCE IN DRIVE TECHNOLOGY: PWM Sine wave PWM creates EMC Sine wave is noise free

4 Todays Electric Ship Technologies How Efficient, Reliable, Predictable and Sustainable are they? Evaluation of Different Drive Solutions Issues to consider STADT NO LOSS 12 Pulse AFE LLC Technology in AC drive Sine Wave PWM PWM PWM No. of electric energy transformations or 5 4 Power Train Losses No 6 % 6 % 6 % Cooling Air is sufficient Water Water Water Power Transformers Needed No Yes No/Yes Yes Redundant Power Units Standard Special Special Special Harmonic Distortion (THD) No High High High Electromagnetic Interference No High High High Acoustic Switching Noise No Yes Yes Yes Screened Power Cables No Yes Yes Yes Depending on Harmonic Filters No Yes Yes Yes Designed Economic Lifetime 25 Years 10 Years 10 Years 10 Years Maintenance Requirement Very Low Frequent Frequent Frequent Onboard Crew Skills Ordinary Special Special Special MTBF 7 Years 1 Year 1 Year 1 Year MTTR 1 Hour 1 Week 1 Week 1 Week Spares Globally Available Yes No No No Weight of Drive System 100 % 1400 % 600 % 1100 % Size of Drive System 100 % 600 % 450 % 500 % All Voltage Class (220V-15kV) Yes No No No Power Scalable Yes No No No Regenerates Power to Grid Yes No Yes No No. of Power Components in Line Capacitors IN MAIN No Yes Yes Yes Explosion Risk in Drive No Yes Yes Yes Propeller Pitch Configuration CP CP or FP CP or FP CP or FP Financial Risk (Service cost, Off-hire) Very Low High High High

5 STADT STADT NO-LOSS STASCHO DRIVES Services: STADT AC MOTORS Engineering Manufacturing Commissioning Global Services STADT MSB MV and & LV Solutions: LNG - electric Diesel - electric STADT TRANSFORMERS Hybrid - electric Battery - electric POWER MANAGEMENT

6 STEALTH NO-LOSS AC drives for the full electric warship No electromagnetic interference, EMI, due to sine wave operation No harmonic voltage distortion, THD, on the ship No transformers for the propulsion are needed No electric losses in the drives at normal operation ( BP ) High redundancy in all levels of the drive systems Major reduction of space and weight for the drives Minimal need for cooling of drives and its systems No need for screened power cables and cable segregation Rugged and very well proven technologies. MTBF and lifetime improved dramatically compared to competitors Simplified technology, 80 % reduction in number of components

7 Sustainability Reliability Partnership STADT AS Molovegen 2 N-6083 Gjerdsvika NORWAY Tel.: